header .nav li:nth-child(5) a span {
    color: #34A0D5;
    border-bottom: 2px solid #34A0D5;
}
/*container开始*/
.container{
    margin-top: 40px;
    margin-bottom: 20px;
}
/*右侧开始*/
.container .right{
    float: right;
    width: 340px;
    background: #fff;
}
/*左侧开始*/
.container .left{
    float: left;
    width: 720px;
    background: #fff;
    padding: 20px 20px 40px;
}
.container .left .con img,.container .left .con video{
    max-width: 100%;
}
.container .left .top h1{
    font-size: 20px;
    font-weight: bold;
}
.container .left .top h2{
    font-size: 14px;
    color: #666;
    margin-top: 10px;
    margin-bottom: 20px;
}
.container .left .top video{
    width: 680px;
    height: 382px;
    display: none;
}
.container .left .con{
    margin-top: 20px;
    overflow: hidden;
}